Why is it important that blood move very slowly through the capillaries?
A)to allow for molecular exchange between the blood and the tissues
B)to allow for normal heart functioning
C)blood moves very quickly through the capillaries

Question

Quizplus · Accepted Answer

Blood moves very slowly through the capillaries to allow for molecular exchange between the blood and the tissues. The slow flow ensures that there is enough time for diffusion of oxygen, nutrients, and other essential molecules from the blood into the surrounding tissues, and for the uptake of waste products from the tissues into the blood for removal. Speeding up the flow of blood through the capillaries would reduce the time available for efficient exchange and compromise tissue health.

Why Is It Important That Blood Move Very Slowly Through